AMC1200BDUB

Overview

The AMC1200BDUB is a fully-differential isolation amplifier manufactured by Texas Instruments. It features a galvanic isolation barrier with an insulation voltage of 4250 Vrms and a peak isolation rating of 4 kV. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V, consuming a typical supply current of 5.4 mA. It provides a fixed gain of 8 V/V with a 3 dB bandwidth of 100 kHz and a common-mode rejection ratio (CMRR) of 108 dB. The input offset voltage is specified at 200 µV. Packaged in an 8-pin SOP tube, it supports surface mount installation and functions within a temperature range of -40°C to +105°C.

Feature Summary

• Utilizes a silicon dioxide (SiO2) isolation barrier offering high magnetic disturbance immunity for signal integrity.
• Optimized for direct connection to shunt resistors with a ±250-mV input voltage range for precise current sensing.
• Provides fully differential output to minimize noise susceptibility in electrically noisy environments.
• Features low power consumption suitable for battery-operated or thermally constrained applications.

Applications

• Motor control systems requiring precise current feedback.
• Green energy inverters and grid-tied converters.
• Uninterruptible power supplies (UPS) for accurate monitoring.
• Variable frequency drives (VFDs) for industrial automation.

Procurement Notes

Verify the specific suffix 'BDUB' corresponds to the SOP-8 tube packaging variant when ordering. Confirm that the required insulation voltage ratings align with UL1577 and IEC60747-5-2 standards for your safety certification needs. Ensure the operating environment remains within the specified -40°C to +105°C range to maintain guaranteed performance parameters. Check for moisture sensitivity level requirements during storage and handling procedures.

Selection Notes

Select this component when a fixed gain of 8 V/V is required for isolated current sensing applications. It is suitable for designs needing high common-mode rejection to handle large voltage transients. Consider the SOP-8 tube package if automated insertion equipment is configured for tubed components rather than reels. Evaluate the 100 kHz bandwidth against the switching frequencies of the target power stage to ensure adequate response time without excessive noise amplification.

Part Context

The AMC1200 belongs to Texas Instruments' family of precision isolation amplifiers designed for robust industrial and automotive environments. Unlike capacitive isolators, this device uses a silicon dioxide barrier, providing superior immunity to magnetic interference. The BDUB suffix denotes the specific tape-and-reel or tube packaging configuration available through distributors, distinguishing it from other pinout or speed variants within the broader AMC1200 product line.

Replacement Considerations

Public confirmed substitute part numbers: AMC1200SDUB, AMC1200CDWVR.